A:
The Bible makes it clear that those who belong to Christ will receive their new
bodies at Christ's return (1 Cor 15:23)(1 Th 4:16). The bodies of those in
Christ who have died will be resurrected and glorified first, and "then we which
are alive and remain shall be caught up together with them in the clouds" (1 Th
4:17), at which time we will receive our glorified bodies.

For those in Christ who had died previously, this
will be the time when their soul/spirit, which has been in Heaven in a
disembodied state, will be reunited with their body which had been "sleeping."
("Sleeping" is equivalent to dying. Our bodies "sleep," but our soul/spirit is
never shown to "sleep" [See:
Q: #2].)

Exactly when this event will happen is a matter
of contention that depends on one's eschatological point of view. Most agree
that this is the rapture ("caught up" 1 Th 4:17 = Latin word "raptus")(a
"mystery" not previously revealed in the Old Testament 1 Cor 15:51), but
disagree on when the rapture takes place. Regardless of the view one has,
this event will take place somewhere within a 7 year time frame called the
Tribulation: either at the beginning, midpoint, or end of it.

There is also some difference of opinion as to
whether the bodies of the Old Testament believers will be raised at the same
time as the New Testament believers. Some believe that New Testament
believers will be raised at the start of the Tribulation and Old Testament
believers at the end of it. (This is why I don't spend a lot of time on
eschatology .)

The Bible clearly tells us that the bodies of
believers AND unbelievers will be resurrected (Jn 5:29-29)(Acts 24:15)(Dan
12:2). There seems to be fairly universal agreement that the bodies of
unbelievers will not be resurrected until after the millennium or 1000 yr
reign of Christ, which occurs after the Tribulation. When they are raised,
they will be judged at the Great White Throne judgment, and then cast into
the Lake of Fire for eternity (Rev 20:5,11-15).